<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>loading</title>
  <style>
    * {
      padding: 0;
      margin: 0;
    }

    .spinner {
      width: 40px;
      height: 40px;
      background-color: #fd5656;
      margin: 100px auto;
      animation: sk-rotateplane 1.2s infinite ease-in-out;
    }

    @keyframes sk-rotateplane {
      0% {
        transform: perspective(120px) rotateX(0deg) rotateY(0deg);
      }

      50% {
        transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg);
      }

      100% {
        transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg);
      }
    }
  </style>
</head>
<body>
  <div class="spinner"></div>
</body>
</html>
